Fasensor: Difference between revisions
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==Code Test sensors== | |||
<pre> | |||
#include <Wire.h> | |||
#include <Adafruit_BMP085.h> | |||
/*************************************************** | |||
This is an example for the BMP085 Barometric Pressure & Temp Sensor | |||
Designed specifically to work with the Adafruit BMP085 Breakout | |||
----> https://www.adafruit.com/products/391 | |||
These displays use I2C to communicate, 2 pins are required to | |||
interface | |||
Adafruit invests time and resources providing this open source code, | |||
please support Adafruit and open-source hardware by purchasing | |||
products from Adafruit! | |||
Written by Limor Fried/Ladyada for Adafruit Industries. | |||
BSD license, all text above must be included in any redistribution | |||
****************************************************/ | |||
#include "DHT.h" | |||
#define DHTPIN A1 // what digital pin we're connected to | |||
// Uncomment whatever type you're using! | |||
//#define DHTTYPE DHT11 // DHT 11 | |||
#define DHTTYPE DHT11 // DHT 22 (AM2302), AM2321 | |||
// Connect VCC of the BMP085 sensor to 3.3V (NOT 5.0V!) | |||
// Connect GND to Ground | |||
// Connect SCL to i2c clock - on '168/'328 Arduino Uno/Duemilanove/etc thats Analog 5 | |||
// Connect SDA to i2c data - on '168/'328 Arduino Uno/Duemilanove/etc thats Analog 4 | |||
// EOC is not used, it signifies an end of conversion | |||
// XCLR is a reset pin, also not used here | |||
DHT dht(DHTPIN, DHTTYPE); | |||
Adafruit_BMP085 bmp; | |||
double Fahrenheit(double celsius) | |||
{ | |||
return 1.8 * celsius + 32; | |||
} | |||
// fast integer version with rounding | |||
//int Celcius2Fahrenheit(int celcius) | |||
//{ | |||
// return (celsius * 18 + 5)/10 + 32; | |||
//} | |||
//Celsius to Kelvin conversion | |||
double Kelvin(double celsius) | |||
{ | |||
return celsius + 273.15; | |||
} | |||
// dewPoint function NOAA | |||
// reference (1) : http://wahiduddin.net/calc/density_algorithms.htm | |||
// reference (2) : http://www.colorado.edu/geography/weather_station/Geog_site/about.htm | |||
// | |||
double dewPoint(double celsius, double humidity) | |||
{ | |||
// (1) Saturation Vapor Pressure = ESGG(T) | |||
double RATIO = 373.15 / (273.15 + celsius); | |||
double RHS = -7.90298 * (RATIO - 1); | |||
RHS += 5.02808 * log10(RATIO); | |||
RHS += -1.3816e-7 * (pow(10, (11.344 * (1 - 1/RATIO ))) - 1) ; | |||
RHS += 8.1328e-3 * (pow(10, (-3.49149 * (RATIO - 1))) - 1) ; | |||
RHS += log10(1013.246); | |||
// factor -3 is to adjust units - Vapor Pressure SVP * humidity | |||
double VP = pow(10, RHS - 3) * humidity; | |||
// (2) DEWPOINT = F(Vapor Pressure) | |||
double T = log(VP/0.61078); // temp var | |||
return (241.88 * T) / (17.558 - T); | |||
} | |||
// delta max = 0.6544 wrt dewPoint() | |||
// 6.9 x faster than dewPoint() | |||
// reference: http://en.wikipedia.org/wiki/Dew_point | |||
double dewPointFast(double celsius, double humidity) | |||
{ | |||
double a = 17.271; | |||
double b = 237.7; | |||
double temp = (a * celsius) / (b + celsius) + log(humidity*0.01); | |||
double Td = (b * temp) / (a - temp); | |||
return Td; | |||
} | |||
void setup() { | |||
Serial.begin(9600); | |||
if (!bmp.begin()) { | |||
Serial.println("Could not find a valid BMP085 sensor, check wiring!"); | |||
while (1) {} | |||
} | |||
} | |||
void loop() { | |||
Serial.print("Humidity = "); | |||
Serial.print(dht.readHumidity()); | |||
Serial.println(" *H"); | |||
Serial.print("Temperature = "); | |||
Serial.print(bmp.readTemperature()); | |||
Serial.println(" *C"); | |||
Serial.print("Pressure = "); | |||
Serial.print(bmp.readPressure()); | |||
Serial.println(" Pa"); | |||
// Calculate altitude assuming 'standard' barometric | |||
// pressure of 1013.25 millibar = 101325 Pascal | |||
Serial.print("Altitude = "); | |||
Serial.print(bmp.readAltitude()); | |||
Serial.println(" meters"); | |||
// you can get a more precise measurement of altitude | |||
// if you know the current sea level pressure which will | |||
// vary with weather and such. If it is 1015 millibars | |||
// that is equal to 101500 Pascals. | |||
Serial.print("Real altitude = "); | |||
Serial.print(bmp.readAltitude(101500)); | |||
Serial.println(" meters"); | |||
Serial.println(); | |||
delay(5000); | |||
} | |||
</pre> | |||
==PHP and Mysql== | |||
Create a database with three tables: temperature, humidity, pressure. Use the following code: | |||
<pre> | |||
</pre> | |||
Add 2 files to your server: connect.php and add.php: | |||
<pre> | <pre> | ||
</pre> | |||
<pre> | |||
</pre> | </pre> | ||
==Code== | |||
==Libraries== | ==Libraries== |
Revision as of 21:06, 13 July 2018
Fasensor é um sensor montado a partir de um arduino, com sensor de temperatura, humidade e pressão atmosférica. Pode consultar o projecto em: Dados recolhidos: Temperatura, Humidade, Pressão Atmosférica
Componentes
Arduino ethernet
BMP085
DHT11
Code Test sensors
#include <Wire.h> #include <Adafruit_BMP085.h> /*************************************************** This is an example for the BMP085 Barometric Pressure & Temp Sensor Designed specifically to work with the Adafruit BMP085 Breakout ----> https://www.adafruit.com/products/391 These displays use I2C to communicate, 2 pins are required to interface Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Limor Fried/Ladyada for Adafruit Industries. BSD license, all text above must be included in any redistribution ****************************************************/ #include "DHT.h" #define DHTPIN A1 // what digital pin we're connected to // Uncomment whatever type you're using! //#define DHTTYPE DHT11 // DHT 11 #define DHTTYPE DHT11 // DHT 22 (AM2302), AM2321 // Connect VCC of the BMP085 sensor to 3.3V (NOT 5.0V!) // Connect GND to Ground // Connect SCL to i2c clock - on '168/'328 Arduino Uno/Duemilanove/etc thats Analog 5 // Connect SDA to i2c data - on '168/'328 Arduino Uno/Duemilanove/etc thats Analog 4 // EOC is not used, it signifies an end of conversion // XCLR is a reset pin, also not used here DHT dht(DHTPIN, DHTTYPE); Adafruit_BMP085 bmp; double Fahrenheit(double celsius) { return 1.8 * celsius + 32; } // fast integer version with rounding //int Celcius2Fahrenheit(int celcius) //{ // return (celsius * 18 + 5)/10 + 32; //} //Celsius to Kelvin conversion double Kelvin(double celsius) { return celsius + 273.15; } // dewPoint function NOAA // reference (1) : http://wahiduddin.net/calc/density_algorithms.htm // reference (2) : http://www.colorado.edu/geography/weather_station/Geog_site/about.htm // double dewPoint(double celsius, double humidity) { // (1) Saturation Vapor Pressure = ESGG(T) double RATIO = 373.15 / (273.15 + celsius); double RHS = -7.90298 * (RATIO - 1); RHS += 5.02808 * log10(RATIO); RHS += -1.3816e-7 * (pow(10, (11.344 * (1 - 1/RATIO ))) - 1) ; RHS += 8.1328e-3 * (pow(10, (-3.49149 * (RATIO - 1))) - 1) ; RHS += log10(1013.246); // factor -3 is to adjust units - Vapor Pressure SVP * humidity double VP = pow(10, RHS - 3) * humidity; // (2) DEWPOINT = F(Vapor Pressure) double T = log(VP/0.61078); // temp var return (241.88 * T) / (17.558 - T); } // delta max = 0.6544 wrt dewPoint() // 6.9 x faster than dewPoint() // reference: http://en.wikipedia.org/wiki/Dew_point double dewPointFast(double celsius, double humidity) { double a = 17.271; double b = 237.7; double temp = (a * celsius) / (b + celsius) + log(humidity*0.01); double Td = (b * temp) / (a - temp); return Td; } void setup() { Serial.begin(9600); if (!bmp.begin()) { Serial.println("Could not find a valid BMP085 sensor, check wiring!"); while (1) {} } } void loop() { Serial.print("Humidity = "); Serial.print(dht.readHumidity()); Serial.println(" *H"); Serial.print("Temperature = "); Serial.print(bmp.readTemperature()); Serial.println(" *C"); Serial.print("Pressure = "); Serial.print(bmp.readPressure()); Serial.println(" Pa"); // Calculate altitude assuming 'standard' barometric // pressure of 1013.25 millibar = 101325 Pascal Serial.print("Altitude = "); Serial.print(bmp.readAltitude()); Serial.println(" meters"); // you can get a more precise measurement of altitude // if you know the current sea level pressure which will // vary with weather and such. If it is 1015 millibars // that is equal to 101500 Pascals. Serial.print("Real altitude = "); Serial.print(bmp.readAltitude(101500)); Serial.println(" meters"); Serial.println(); delay(5000); }
PHP and Mysql
Create a database with three tables: temperature, humidity, pressure. Use the following code:
Add 2 files to your server: connect.php and add.php: